Felines. Lions, pumas and leopards especially. So beautiful yet so deadly... House cats are also adorable and many with the sheen, sleek fur are stunning. See every muscle. Probably a reason I also like pumas. Single colored fur allows one to see the muscles ripple underneath. With lions it's a bit harder, though the queens aren't lacking at all.
For more common animals, I guess certain canines. Again the sleek short fur is preferred . I've never been a fan of the very furry breeds. I don't have a breed preference in of itself, it's more of the overall look which can fall into anything from hounds to mastiffs.